Boiler-feed device



.June 5, 1928. 1,672,610

L. D. GOFF BOILER FEED DEVICE Filed July 16, 1925 gnoentox firm new Patented June 5, 1928.

LEONARD 1). Gen, OF THREE BIVERS,' MICHIGAN.

. BOILER-FEED DEVICE.

A in -anon filed m 16, 1925. seria1'm..44,019.

This invention relates to improvements inboiler feed devices. j

The main object of this invention is .to provide an improved apparatus whereby the condensate or return water is effectively delivered to the boiler.

A further object is to provide an apparatus having these advantages which Is not likely to become inoperative or hung up in use. I T A still further object is to provide an im proved apparatus of the class described which is verysimple and economical in structure.

Objectsrelating to details and'economies of construction and operation will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification. The invention is clearly defined and pointed out in the claims.

A structure which is a preferre'dembodiment of my invention is clearly illustrated in the accompanying drawing, forming a part of this application, in which:

' Fig. I is a diagrammatic view oian apparatus embodying the features of my invention, the parts being shown mainly in conventional form; I I

Fig. II is a detail view partially in vertical section on a line corresponding to line 21 2M? Figs. I andIII.

Fig. .111 is a detail view mainly in ver tical section on a line corresponding to line' 3-3 of Fig'II.

In the, drawing similar reference characters refer to similar partsthroughout the:

several views, and the sectional views are taken looking in the direction of the little arrows at the endsof the section lines.

Referring to the drawing, '1 have shown my improvements as-embodied in a heating system in which 1 represents the boiler, 2- the" distributing pipe and 8 the return pipe..

These parts are shown conventionally.

' The trap casing 4: is connected to the return pipe, the return pipe. having the vT coupling 5 therein connected to the bottom of the trap casing. At each side of this trap connection the return pipe is provided with a-check valve 6. w

I The trap casing has a relief port 7 controlled by the outwardly seating valve 8, the relief port being connected by the pipe 9 to deliver into thev ash pit of the boiler. It"

to the boiler through the pipe 12. These valves are operatively connected so that the pressure valve 11 is opened when the valve 8 is closed and vice versa.' Thus arranged,the pressure acts to hold both the I ventand preSsurevaIVes -tO their seats.

The valve operating means consists of the lever 13 which is pivoted at 14011 the hangers '15 depending from the top of the cas ing, the lever having a cross'arm 16 through which the stems Band 19 of thevalves are arranged,.spherical stops 20 being arran ed on the stems at each sidev of the arm. his provides a'loose connection which allows for .a slight lost motion preventing the crampingof the parts and permitting'the complete seating of the valves. I The float rod 21 is arranged through'the lever and has spherical stops 22 thereon at each side of the lever. The float 23 is slidable on the rod 21, the rod being provided with tappets 24 and 25 with which the 'fioat alternately engages as the water rises and falls in'the float chamber. v

To prevent the collapsing of the float under pressure and also to permitequalizing' of pressures within the float thereby affecting its buoyancy and to exhaust water of condensation from slight leakage, I provide'avent pipe 26 whic opens to the outside of the float atthe topthereof or above the line of buoyancy and into the floatat a point adjacent its bottom. I

"With the parts thus arranged, the opera.- tion of the'fioat is as follows: I I

In the initial starting of the apparatus the float would of course be at its lower position, the valve 11 being closedand the valve 8 open, as shown in Fig. III. The

pressure of the water on the valve that the boiler side or left hand side of the float holds this valve on its seat so that return water will flow into the trap casing, lifting the float until thebuoyancy thereof is sufficient to open the valve 11 and close thevalve 8. This admits .boiler pressure to the trap casing'andclosestheright hand check valve 6, allowing the Water to flow into the left hand check valve. The float. being vented, pressure within the float corresponds to the variation of pressure in the float or trap casing so that the float is not collapsed, and further, any water condensation or leakage is drawn off when the pressure. is

released as occurs when the valve 11 is again closed and. the valve 8 opened.- Both the relief and pressure valves open against pressure so that as the float rises itengages the tappet 4t, but the pressurevalve is not .the float rides down on the discharging water, the pressure tending to hold the valve 8 to its seat until the weight the float overcomes this actlon and sufliclent water will have been dischargedto allow substantial fall of the float at this time quickly closing the pressure valve. I

I have illustrated and described my improvements in a very simple and practical embodiment. I have not attempted to illus trate and describe various modifications and adaptations which I contemplate as believe the disclosure made will enablethose skilled in the art to embody or adapt improvements as maybe desired. I

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In an apparatus of the class described, the combination of a return pipe provided with a pair of check valves,- a trap casing connected at its lower end to said. return pipe between said heclrvalves, a pressure connection to the ,top of said trap casing,

an inwardly seating valve for said pressure connection, an outwardly seating relief valve at the topo'l said casing, a pivoted lever, said pressure and relief valves having a. direct pivotal connection to said lever whereby they are alternately opened and closed as the lever is actuated, a float rod having a direct pivotal connection to said lever and provided withspaced tappets, aclosed float slidably mounted on said rod to coact with s id tappets whereby the relief valve is closed and the pressure valve opened when the float is lifted and the pressure valve is closed and the relief valve opened when the float tans, said float, being or such proportionthat the buoyancy thereof when submergedbeyond its floating point sutflcient to overcome the resistance of the pressure on the pressure valvewill actuate the lever with a snap action to open said valve without the aid ofa spring, and or such weight that when the resistance Of the pressure on the relief valve is overcome by the falling of the float the lever will be actuated vith a snap action to open said relief valve without the aid of a spring, and a vent we for said float opening at the top thereof J openinginto the float at a point adjacent the bottom thereof whereby the interior of the float is subject to the variations; in pres sure within the casing and water is exhausted from' the float.

In an apparatus of the class described, the combination of a return pipe provided with a pair of check valves, a trap casing connected at its lower end to said return pipe between said check valves, a pressure connection to the top of said trap casing provided with an inwardly seating valve, an outwardly seating relief valveat the top of said casing, a pivoted lever, saidpressure connection and relief valves having a direct pivotal connection to said lever whereby they are alternately opened and closed as the lever is actuated, a float .ro'd having. dlreet pivotal connection to said lever and providedwith spaced tappets, a closed float s'lidably mounted on said ro'd'to coact with said tappets whereby the relief valve is closed and the pressure valve opened when;

the float is lifted and the pressure valve, is closed and the reliei valve opened when the float falls, said float being of such pro portion thatthe' buoyancy thereofwhen subn'ierge'd beyond its floating point sufiicient' to overcome the resistance of the pressure on the pressure valve will actuate the lever with a snap action to open said valveiwithout the aid of a spring, andf such weight that when there'sistance of the pressure on the relief valve is overcome by the falling of the float the lever will be actuatediwith a snap action to open said relief valve without the air of a spring.

3. In an apparatus with a pairof check valves, a trap casing connected at its lower end to sand pipe between said check valves, an inwardly seating pressure ,valve at the top of said casing, an outwardly seating relie l valve at the top of said casing, apivoted lever having dire'et. pivotal connections tosaid valves hereb they are" alternately opened and closed, a

float 'rod having a pivotal connection to said lever, a float slidably mounted on said] float rod, said rod being provided with tap pets with which said float coacts, said float actuated with asnap action to open said of thec'lass described, thc combination of a return pipe providedill.)

for

relief valve without the aid of a spring, and a vent pipe for said float opening at the top thereof and opening into the float at a point adjacent the bottom thereof whereby the interior of the float is subject to the variations in pressure Within the casing and water is exhausted from the float.

4. In an apparatus of the class described,

thecoinbination of a return pipe provided with a pair of check valves, a trap casing connected at its lower end to said pipe be tween said check valves, an inwardly seating pressure valve at the top of said casing,

an outwardly seating relief valve at the top of said casing, a pivoted lever having dilever, a float slidably mounted on said float rod, said rod being provided with tappets with which said float coacts, said float being of such proportion that the buoyancy thereof when submerged beyond its floating point sufficient to overcome the resistance of the pressure on the pressure valve will actuate the lever with a snap action to open .said valve without theaid of a spring, and of such Weight that when the resistance of the ated with a snap action to open said relief valve without the aid of a spring;

pressure on the relief valve is overcome by the falling of the float the lever will be actu- In witness whereof I have hereunto set 

